Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3dca1d8ebe0f8934e7478e6860620deb33fc04f37a2678e88fc1d4ac3c3f056c' 
  AND token = 'DalNAywYXcayXNO4pjeJb+ZKYD7e3ixdDTCOLSlxxQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}